I'm building the skybolt myself, and it has a bit of wood bending, but like the last poster said, it's mostly 3/32 sheeting or 1/16. The fuse sides up near the front have to be bent a little to accomodate the wing bolt mounts. All I do is wet it and use strapping tape. I dont consider myself a master kit builder, but my skybolt is turning out perfect (My cabanes came out with perfect incidence without any modifications). I have really enjoyed building this kit. I've been working on it for about a week and a half, and I have almost finished the fuselage (should finish tonight). The wings are very sleek and thin, hoping they are not too delicate looking at the plans. Anyways, I have heared that it's not as aerobatic as an ultimate, but I sure love the looks of it. I had a Saito .90 sitting around and that's what I'm putting in it. I'm using pull/pull on both rudder and elevator, and using the Shell Aeroworks Trim scheme (I work for Shell International Oil). Anyways, I'll post some pics of it soon.